TY JOUR TI On the feasibility of voluntary forest certification KW certification process KW forest management KW supply chain KW market KW lumber KW cost KW per unit cost expenses. JO Forestry Engineering Journal AU Ponomarev, D.. AU Derbin , V.. AU Derbin, M.V. PY 2014 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov